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A compact feldspathic rock; felsite. See Felsite.

nd enriched with favors by a person of high rank or authority. Committing to a wicked favorite All public cares. Milton.

A variety of opal occuring in the cavities of volcanic tufa, in smooth and shining globular and botryoidal masses, having a pearly luster; -- so called from Fiora, in Ischia.

A fluoride of cerium, occuring near Fahlun in Sweden. Tynosite, from Colorado, is probably the same mineral.

Calcium fluoride, a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called fluor spar, or simply fluor.…

One who adopts the views of Fourier.

A variety of rhodonite, from Franklin Furnace, New Jersey, containing some zinc.

A vitrified sand tube produced by the striking of lightning on sand; a lightning tube; also, the portion of rock surface fused by a lightning discharge.

A cretaceous fossil sea urchin of the genus Galerites.

An amorphous mineral of apple-green color; a hydrous silicate of nickel and magnesia. It is an important ore of nickel.

A loose hydrated form of silica, a variety of opal, deposited in concretionary cauliflowerlike masses, around some hot springs and geysers.

A mineral, consisting of the sulphates of soda and lime.

A medicinal preparation made by mixing or dissolving a substance in glycerin.

One of the followers of Francis Gomar or Gomarus, a Dutch disciple of Calvin in the 17th century, who strongly opposed the Arminians.

One who collects illustrations from various books for the decoration of one book.

A projecting turret for a sentry, as at the salient angles of works, or the acute angles of bastions.

A mineral consisting of the arseniate of lime; -- so named in honor of W. Haidinger, of Vienna.

Native sulphide of manganese a reddish brown or brownish black mineral.

A rare fluophosphate of glucina, in small white crystals.

Full of spirit or natural fire; haughty; courageous; impetuous; not brooking restraint or opposition.